Name An Agent Which Causes Denitrification.
Thiobacillus denitrification causes denitrification, it is involved in the conversion of oxides of nitrogen into free N2. Stay tuned to... View Article
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In Which Period Of The Cell Cycle Cells Exist In A Quiescent State?
The resting phase or G0 is a non-growing state distinct from the interphase. It is in this period of the... View Article
Name Any One Cause For Plants And Animals Being Driven To Extinction.
Fragmentation and habitat loss are important causes for plant and animal species being driven towards extinction. Stay tuned to BYJU’S... View Article
When Does Extrusion Of The Second Polar Body Occur?
The extrusion of the second polar body from the egg nucleus takes place once the sperm enters into the secondary... View Article
When Is The Cambium Most Active In Plants Of Temperate Regions?
The cambium in the plants of temperate regions is most active in spring where less deposition in the xylem and... View Article
The components of a reflex arc are
The components of a reflex arc include the sensory/afferent neuron, spinal cord, motor/efferent neuron, and effector organ.
State true or false: many cities in mahajanapadas were fortified.
True. About 2500 years ago, some janapadas gained more importance than others and were referred to as the mahajanapadas. Most... View Article
How is light scattered by the air
Light is scattered in the air by the phenomena scattering. Scattering is the event in which change in direction of... View Article
A non-conducting ring of radius R has charge Q distributed unevenly over it. If it rotates with an angular velocity ω, the equivalent current will be
With each rotation, charge Q crosses any fixed point near the ring. Number of rotations per second = frequency (f)... View Article
Army: Logistics:: ? : ? a) Soldiers : Students b) Business : Strategy c) War : Logic d) Team : Individual
Option b) Business : Strategy.
In general, when metal oxides react with water, the resulting solution may be called as: a) neutral b) basic c) acidic d) colored
Option b) basic When the ionic metal oxides react with water it produces hydroxides (compounds containing the hydroxyl ion) and... View Article
An object will continue moving uniformly until a) The resultant force on it is zero. b) The resultant force on it increases continuously. c) The resultant force is at a right angle to its rotation. d) The resultant force acting on it beings to decrease.
Option a) The resultant force on it is zero. The object continues to be in acceleration until the resultant force... View Article
A vertical stick 12m long casts a shadow 8m long on the ground. At the same time a tower casts the shadow of length 40m on the ground. Determine the height of the tower.
The length of vertical stick = length of the tower Shadow of vertical stick = the shadow of the tower... View Article
State true or false all parallelograms are trapeziums
False. A parallelogram has two pair of parallel sides. A trapezium has only one pair of parallel sides.
The IUPAC name of [Cr(CN)6] 3− is
The oxidation state of Cr is x+6(−1)=−3 x−6=−3 x=+3 IUPAC Name: Hexacyanochromate(III)
A solution is 25% water, 25% ethanol and 50% acetic acid by mass. Calculate the mole fraction of each component
Let the mass of the solution is 100g The mass of H2O=25g mass of ethanol =25g mass of acetic acid... View Article
A vector a has components 2p and 1 w.r.t a rectangular cartesian system. This system is rotated through a certain angle about the origin in the counter-clockwise sense. If w.r.t the new system, a has components p+1 and 1, then
Let i, j be unit vectors along the co-ordinate axes\(\begin{array}{l}\vec{a}=2pi+1.j\end{array} \)———–(1)On rotation, let b be the vector having components p+1... View Article
Pure silicon and germanium are a) Conductors b) Semiconductors c) Insulators d) None of these
Option b) Remains constant. Pure silicon and germanium are classified as semiconductors.
The mass of an object a) Can be measured using a spring balance b) Remains constant c) is in the direction of gravitational force d) Varies at different locations
Option b) Remains constant. The mass of the object remains constant throughout the universe. The mass of the object refers... View Article
Which one of the following carries extra nuclear genetic material? (A) Ribosomes (B) Golgi apparatus (C) Plastids/ Mitochondria (D) Chromosome
Option (C) Plastids/ Mitochondria. An extra nuclear inheritance also known as the cytoplasmic inheritance refers to the transmission of genes... View Article
